ArticleOpen veterinary journal2026
Effects of combined plant bioactives and probiotic supplementation on ram semen quality outside the breeding season.
Article in Open veterinary journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: According to many authors, supplementation with a combination of probiotics and bioactive plants influences sexual activity and improves sperm production in rams after mating. It has also been reported to increase ejaculate volume, improve sperm motility and concentration, and result in a low abnormal sperm percentage. Aim: This study aimed to investigate the influence of a combination of bioactive substances contained in three plant species ( Methods: The study was conducted at the experimental base of the Agricultural Institute in the city of Stara Zagora for 2 months in 2025. Eighteen clinically healthy rams of the Bulgarian Dairy Synthetic Population (BDSP) breed, aged 3-5 years, were raised indoors in group pens with an outdoor yard for walking. The control group (CG) was fed grass hay and 1.2 kg compound feed. Experimental group 1-EG1 received grass hay and 1.2 kg compound feed with supplement ( Results: The combined application of bioactive substances and probiotics showed statistically significant deviations in volume between the 42nd and 49th days ( Conclusion: The co-supplementation of BDSP ram diets with plant bioactive substances and probiotics (
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